It's one thing to long for Sudoku on your handset, but to pick up a Japanese look-a-like trinket that handles the former yet omits any calling abilities just seems silly. Nevertheless, this interesting handheld purportedly allows brainiacs to whittle the day away with Sudoku puzzles, and while it sure looks eerily similar to a-many of Sony Ericsson's mobiles, there's no reception onboard. Of course, it is only ¥980 ($8.54), so it's not like the manufacturer is really trying to dupe anybody -- right?